401404220340444 has 36 divisors (see below), whose sum is σ = 1052240692829144. Its totient is φ = 133801406779824.

The previous prime is 401404220340443. The next prime is 401404220340479. The reversal of 401404220340444 is 444043022404104.

It is a happy number.

401404220340444 is a `hidden beast` number, since 4 + 0 + 1 + 4 + 0 + 4 + 2 + 203 + 4 + 0 + 444 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×401404220340444² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 401404220340399 and 401404220340408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401404220340443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 206483651467 + ... + 206483653410.

Almost surely, 2^{401404220340444} is an apocalyptic number.

It is an amenable number.

401404220340444 is an abundant number, since it is smaller than the sum of its proper divisors (650836472488700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401404220340444 is a wasteful number, since it uses less digits than its factorization.

401404220340444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412967304896 (or 412967304882 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 36.

Adding to 401404220340444 its reverse (444043022404104), we get a palindrome (845447242744548).

The spelling of 401404220340444 in words is "four hundred one trillion, four hundred four billion, two hundred twenty million, three hundred forty thousand, four hundred forty-four".